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Error code reference

Dacor Range Oven Cooktop Error Code LO

Millennia Dishwasher

Dacor codesDacor range oven cooktop codes

Millennia Dishwasher: Low liquid in the rinse aid dispenser.

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What LO means on a Dacor range oven cooktop

The LO error code on a Dacor Millennia Dishwasher indicates that the rinse aid dispenser has dropped below the minimum required liquid level. The dispenser is monitored by a float or optical sensor inside the rinse aid reservoir. When the sensor detects insufficient liquid, the control board triggers the LO indicator to alert the user that refilling is needed before the next wash cycle. This is a maintenance alert rather than a fault or malfunction code.

Rinse aid plays a critical role in the final rinse stage of a dishwasher cycle. It lowers the surface tension of water, allowing it to sheet off dishes and glassware rather than forming droplets that leave spots and streaks. Running cycles without rinse aid can result in poor drying performance and visible water marks on dishes, particularly on glassware and plastics.

In most cases, the LO code is resolved simply by refilling the rinse aid dispenser with an appropriate dishwasher rinse aid product. However, if the indicator persists after refilling, the dispenser cap may not be sealing correctly, the dispenser mechanism may be clogged or damaged, or the liquid level sensor itself may be faulty. A malfunctioning sensor can misread a full reservoir as empty, requiring further diagnosis of the sensor circuit or dispenser assembly.

Source: manufacturer service documentation.

Common causes of LO

  1. 01

    Depleted rinse aid reservoir

    Wiring / connection

    The most common reason for the LO code is that the rinse aid dispenser has been used up through normal operation. Check the dispenser compartment on the inside of the door and refill it with dishwasher rinse aid to the maximum fill line.

  2. 02

    Leaking or improperly sealed dispenser cap

    Part replacement

    If the dispenser cap is cracked, loose, or not seated correctly, rinse aid can leak out prematurely, causing the level to drop faster than expected. Inspect the cap and its seal for visible damage or improper fit.

  3. 03

    Clogged dispenser mechanism

    Wiring / connection

    Residue buildup inside the dispenser can block the reservoir and prevent accurate liquid level readings. Cleaning the dispenser port and surrounding area may resolve the issue if refilling alone does not clear the code.

  4. 04

    Faulty liquid level sensor

    Part replacement

    If the LO code persists after the reservoir has been properly filled, the float or optical sensor that monitors rinse aid level may be defective. A malfunctioning sensor will report a low level even when the dispenser is full, and the sensor or dispenser assembly will need to be replaced.

  5. 05

    Damaged dispenser assembly

    Part replacement

    Physical damage to the dispenser body, such as cracks or a broken release mechanism, can prevent the unit from retaining rinse aid or functioning correctly. Visual inspection of the dispenser assembly will reveal any structural damage.

See the test procedure for each cause

Frequently asked questions about LO

What does LO mean on a Dacor range, oven, cooktop?
Despite appearing on Dacor cooking appliance documentation, the LO code is actually associated with the Dacor Millennia Dishwasher. It indicates that the rinse aid dispenser is low or empty. This is a routine maintenance alert and not a component failure. Refilling the rinse aid dispenser is the standard first step to address this code.
How do I fix the LO code on my Dacor Millennia Dishwasher?
Open the rinse aid dispenser located on the inside of the dishwasher door and refill it with a standard dishwasher rinse aid product up to the maximum fill line. Replace and secure the dispenser cap. Run a cycle to confirm the alert clears. If the LO code remains after refilling, inspect the dispenser cap seal and check whether the sensor or dispenser assembly may need to be replaced.
Is it safe to run my Dacor dishwasher when the LO code is showing?
Running the dishwasher with low or no rinse aid is not a safety hazard, but it will likely affect performance. Without adequate rinse aid, dishes and glassware may come out with water spots, streaks, or poor drying results. It is best to refill the dispenser before running additional cycles to maintain optimal wash performance.
Will resetting my Dacor dishwasher clear the LO code?
A simple power reset is unlikely to permanently clear the LO code if the rinse aid level is genuinely low, because the sensor will continue to detect the insufficient level and re-trigger the alert. The correct fix is to refill the rinse aid dispenser. Once the reservoir is adequately filled and the sensor reads a sufficient level, the code should clear on its own or after the next cycle.
How much does it cost to fix the LO code on a Dacor dishwasher?
If the issue is simply a depleted rinse aid supply, the cost is minimal, typically just the price of a bottle of rinse aid, which generally runs in the range of a few dollars to around fifteen dollars. If the dispenser cap, sensor, or full dispenser assembly needs to be replaced, parts and labor costs will vary but could range from roughly thirty dollars to over one hundred fifty dollars depending on the specific component and whether a technician is needed.

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